Refuse-oil burner



April 21, 1925.

J. H. LARSON REFUSE OIL BURNER Filed Nov. 5, 1924 JUPATENT OFFICE.

JACOB ri. LARSON, or christian, .onEeo-n.

REFUSE-OIL BURNER.

Application filed November 3, 1924. Serial No. 747,504.

To all whom it may concern:

Be it hereby known that I, J ACOB H. LAR- soN, a-citizen of the UnitedStates, and a res ident of Gresham, in the county of Multnomah and Stateof Oregon, have invented a new and useful Refuse-Oil Burner, of whichthe following is a specification.

This invention relates generally to the burning of liquid fuel andparticularly to the burning of refuse oils such as accumulate in garageswhen emptying crank cases, etc.

An object of my invention is to enable the garage owner to utilize whatis ordinarily waste material as fuelfor heating-purposes.

A second object is to so construct the device th'atit is extremelysimple to manufacture and has no delicate parts which will be apt to getout of order.

A third object is to so construct the device that the air within thecombustion chamber will be kept in circulation in order that there willnot be any accumulation of unburned gases in any portion of thecombustion chamber.

These and other results will become more apparent from the specificationfollowing and as illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of my device and Figure 2 is a frontelevation. Figure 3 is an enlarged longitudinal section through theburner tip. Figure 4 is an end elevation of the burner tip.

Similar numbers of reference refer to the same parts throughout theseveral views.

Referring in detail to the drawing, I have illustrated a stove 10 havinga door 11 through which the burner tip of my device can be passed.Referring to the device itself, I have constructed same on a base 12 onwhich are mounted the four legs 13 joined at their upper ends by thecradles or cross ties 14 which support the tank 15 provided at one endwith a dividing wall 16 which forms a small compartment for the storageof kerosene to be used in starting the fire. A flange 17 at the top ofthe tank 15 is provided with a strainer 18 preferably made removable andthrough which the waste oils are poured into the tank 15.

Under the tank 15 is placed a fan 19 on whose shelf 20 is mounted-amotor 21 which drives the fan. A damper 22 is provided to cut off thesupply of air to the fan. A tip 23 of sheet metal is attached to thedischarge end 24 of the fan 19 by means of the pin On the end 26 ismounted a T 27 whose upper side is connected by means of a pipe 28 tothe cutoff cook 29 on the lower side of the'kero'sene compartment of thetank 15.

25, and the lower end 26 of the tip 23 is passed throu h the door 11 ofthe stove.

On the stove side of the tank 15 is placed I a guard 30 joined by thebolts 31 which pass through the spacers 32 to the legs 13. On the underside of the refuse oilportion 0f the tank 15 I'have placed an outletpipe 33 whose valve 34: controls the supply of 011 through the tub'e35which forms a coil- '35 over the burner tip end-26*and connects withrthelower side of the/T27.

Inside of the end 27 is placed a flat shell 36 having teeth formed atits lower projecting end 37 and projecting into the end 26.

of the burner tip beyond the position of the T 27. A second T 38 spreadsthe oil in the shell 37 which, if completely gasified in the coil 35,strikes against the sides of the shell 36.

On the under side of the end 26 I have formed the raised lip 39 whichcatches a portion of the air passing through the end 26 and deflectssame into that portion of the stove which is under the tip 23 causingsame to circulate and reduce the tendency to smoke. The T 27 ispreferably mounted on a flange A0 whose screws 41 pass through the tip23 and the shell 36. A screw 42 holds the lower end of the shell 36against the flattened top of the end 26.

The operation of my device is as follows: Kerosene is placed in thesmall compartment of the tank 15 and crank case oil, or similar refuseoil, is placed in the larger compartment. A small amount of kerosene ispermitted to flow into the stove under the control of the valve 29 andpaper or trash is placed in the stove and ignited. The motor 21 is nowstarted and a supply of air is admitted to the burner tip. Whensufficient heat has been developed the valve 34 is opened slightly andcrude oil permitted to flow into the burner, where it mixes with the airfrom the fan and enters the stove and is completely consumed. Byadjusting the damper 22 on the fan 19 a very clean fire can bemaintained.

Since the area of the tank is relatively large and the variation in headis relatively small, it will be seen that a fairly uniform pressure ismaintained and that the valves will therefore require a very smallamount of adjustment.

I am aware that many forms of oil burning devices have been constructedin the past, I therefore do not claim same broadly, but I do intend tocover such forms and modifications as fall fairly within the appendedclaims;

I claim:

1. A refuse oil burner having, in combination, an inclined burner tip; afan arranged to force air through said tip; a flat shell within theupper portion of the discharge end of said tip; an oil container oversaid tip; a pipe leading from said container forming a coil over thedischarge end of said tip and opening into said flat shell; and a lipformed in the under portion of said tip adapted to deflect airunderneath said tip. 7 1 1 2. A refuse oil burner having, incombination, an inclined burner tip; afan arranged to'force air throughsaid tip; a shelf on said burner tip at its lower end; a lip on thebottom of said tip under. said shelf adapted to deflect air through thevbottom of said tip; a fuel tank over the upper end of said tip; avalve-controlled pipe for conveying oil from said tank and depositingsame on said shelf.

3. A refuse oil burner having, in combination, a combustion chamber; aninclined burner tip consisting of a cylindrical pipe having a flattenedlower end projecting into said combustion chamber; aflat shellprojecting from the upper portion of said lower end, the outer edge ofsaid shell having teeth formed thereon, and the lower portion of saidshell forming a shelf in the middle of said tip; a T mounted on said tipover said shelf having an opening into said shell; a double fuel tankover said tip; a valve controlled kerosene pipe from one of said tanksto the upper side of said T; a valvecontrolled oil pipe leading fromsaid tank then forming a coil at the lower end of said tip and thenconnecting with the lower end of said T; and a fan arranged to force airdownwardly through said pipe into said combustion chamber.

JACOB H. LARSON.

